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2. Read and answer the questions according to the text?
(1) Water has the extraordinary ability to dissolve a greater variety of substances than any other liquid. (2) Falling through the air it collects atmospheric gases, salts, nitrogen, oxygen and other compounds, nutrients and pollutants alike. (3) The carbon dioxide it gathers reacts with the water to form carbonic acid. (4) This, in turn, gives it greater power to break down rocks and soil particles that are subsequently put into solution as nutrients and utilized by growing plants and trees. (5) Without this dissolving ability, our lakes and streams would be biological deserts, for pure water cannot sustain aquatic life. (6) Water dissolves, cleanses, serves plants and animals as a carrier of food and minerals; it is the only substance that occurs in all three states — solid, liquid and gas — and yet always retains its own identity and emerges again as water.
1. What type of text is it? The type of the text is scientific
What makes you think that it is informative? Its describing the mesmerizing abilities of water and its impact on world
What type of words are predominant in the text? Mostly,70% of the text is related to scientific vocabulary
What branch of science do most of the terms belong to? Majority of them belong to chemistry such as : " Oxygen,nitrogen, carbonic dioxide, carbonic acid, gas"
2. What is the difference between substance and matter?matter usually has mass and volume, whereas substance means physical matter
Why should water fall through the air? To collect atmosphericgases,salts, nitrogen, oxygen and other compounds, nutrients and pollutants alike
How can water "collect" various substances? By falling through air
3. What elements make up carbonic dioxide? The carbon dioxide molecule is made up of one carbon atom joined to two oxygenatoms. This means it has a chemical formula is CO₂.
What is carbonic acid? A compound of the elements hydrogen, carbon, and oxygen
What are carbonates? Carbonate, any member of two classes of chemical compounds derived from carbonic acid or carbon dioxide
What other acids or salts do you know? Hydrochloric Acid.Sulfuric Acid.Nitric Acid.Carbonic Acid.Formic Acid.Citric Acid. Acetylsalicylic Acid
What is solution? Solution, in chemistry, a homogenous mixture of two or more substances in relative amounts that can be varied continuously up to what is called the limit of solubility
How does water provide food for plants and trees? Water breaks down rocks and soil particles that are subsequently put into solution as nutrients and utilized by growing plants and trees.
4. What is the difference between a stream and a river? A river is a natural flow of running water that follows a well-defined, permanent path, usually within a valley. A stream (also called a brook or a creek) is a natural flow of water that follows a more temporary path that is usually not in a valley
What do plants need for their growth? Water, minerals, sun
When can a lake be called a biological desert? If water doesn't break down rocks and soil particles that are subsequently put into solution as nutrients and utilized by growing plants and trees.
What is pure water? Purified water is water that has been mechanically filtered or processed to remove impurities and make it suitable for use
What is aquatic life? Aquatic life means "any type or species of mammal, fish, amphibian, reptile, mollusk, crustacean, arthropod, invertebrate, coral, or other animal that inhabits the freshwater or marine environment and includes any part, product, egg, or offspring thereof; or freshwater or marine plants, including, seeds, roots, products, and other parts thereof"
Why can pure water not sustain aquatic life? Because pure water doesn't have power to break rocks and soil particles so that it can have sustanaible nutrition
5. Why can water be called a carrier of food? Because it is the only substance that occurs in all three states — solid, liquid and gas
What do we call water in solid state? ICE
What is the general term for liquids and gases? FLUIDS
How can water retain its identity?A chemical property, meanwhile, is any of a material’s properties that becomes evident during a chemical reaction; that is, any quality that can be established only by changing a substance’s chemical identity. Chemical properties cannot be determined just by viewing or touching the substance; the substance’s internal structure must be affected for its chemical properties to be investigated.
Does it mean that it always has the same properties or the same composition? It means it has the same composition, if it becomes ice it still has the H²O
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